Rebuild article system

lib/render_markdown.php

@@ -0,0 +1,36 @@
+<?php
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\MarkdownConverter;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\Extension\GithubFlavoredMarkdownExtension;
+use League\CommonMark\Extension\FrontMatter\FrontMatterExtension;
+use League\CommonMark\Extension\FrontMatter\Output\RenderedContentWithFrontMatter;
+use Symfony\Component\Yaml\Yaml;
+
+
+function render_markdown($file) {
+  // Set up the environment with FrontMatter and GFM support
+  $environment = new Environment([]);
+  $environment->addExtension(new CommonMarkCoreExtension());
+  $environment->addExtension(new GithubFlavoredMarkdownExtension());
+  $environment->addExtension(new FrontMatterExtension());
+
+  $converter = new MarkdownConverter($environment);
+
+  $markdownText = file_get_contents($file);
+  // Convert markdown and extract front matter
+  /** @var RenderedContentWithFrontMatter $result */
+  $result = $converter->convert($markdownText);
+
+  // Parse YAML front matter
+  if ($result instanceof RenderedContentWithFrontMatter) {
+    $frontMatter = $result->getFrontMatter();
+  }
+  $html = $result->getContent();
+
+  // return result
+  return [
+      'meta' => $frontMatter,
+      'html' => $html,
+  ];
+}